About 5 percent of all UFO sightings cannot be easily explained by weather or human technology. A physicist argues that there's compelling evidence to justify serious scientific study and that the skeptics should step aside – for the sake of humanity.

The things you can do with an amaterur telescope.
Shutterstock/AstroStarMay 22, 2018

When NASA first started planning the Kepler mission, no one knew if the universe held any planets outside our solar system. Thousands of exoplanets later, the search enters a new phase as Kepler retires.

The Small Magellanic Cloud galaxy here seen in infrared light, but it looks different when viewed at other wavelengths.
ESA/NASA/JPL-Caltech/STScIJanuary 21, 2018

A LIGO team member describes how the detection of a gravitational wave from a new source – merging neutron stars – vaults astronomy into a new era of 'multi-messenger' observations.

This enhanced-color image of Jupiter’s south pole and its swirling atmosphere was created by citizen scientist Roman Tkachenko using data from the JunoCam imager on NASA’s Juno spacecraft.
NASA/JPL-Caltech/SwRI/MSSS/Roman TkachenkoMay 31, 2017